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Brother International IntelliFax-4750 Service Manual - Page 16

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Model PRINTER Color/Mono Engine Type Resolution (dpi) Speed (ppm) Paper Capacity (sheets) Additional Paper Capacity (sheets) Output Paper Capacity (sheets) Standard Print Language Emulation Resident Fonts Fonts Disk Based Paper Handling Size Manual Feed Slot Other Paper Type Sheet Weight (Paper Cassette) (Manual Slot) Printer Driver Utility Software Toner Life (High Yield : TN-430) (Standard Yield : TN-460) Drum Life (DR400) Interface Type Bundled Cable COPY Color Speed (ppm) Multi Copy (Stack) Multi Copy (Sort) Reduction/Enlargement Resolution (dpi) SCANNER Color/Mono Resolution (dpi) Gray Scale TWAIN Compliant Formats (Import) Formats (Export) OCR MESSAGE CENTER/MESSAGE MANAGER ICM Recording Time Page Memory OGM (MC/MC Pro/Paging) TAD Type Memo/Recording Conversation Toll Saver FAX4750 Available with option or download from Web Site Mono Laser (ZL) 600 x 600 12 250 250 (User option) 150 Windows GDI (600 x 600) No No No LTR, LGL, A4, B5, A5, EXE Custom size (2.75 x 5 to 8.5 x 14) Envelop (DL/C5/CM10/Mona) OHP, envelopes, labels, organizer 64 to 105 g/m2 (17 to 28 lb) 64 to 157 g/m2 (17 to 43 lb) Windows3.1x, 95/98 and NT4.0 Driver with Auto Installer Program No 6,000 pages (A4, @5%) 3,000 pages (A4, @5%) Up to 20,000 pages Parallel No MFC8300 Yes (3/4) Mono Laser (ZL) 600 x 600 12 250 N/A 150 Windows GDI (600 x 600) PCL4 24 bitmap (PCL4 Comp.) Yes (35 True type) LTR, LGL, A4, B5, A5, EXE Custom size (2.75 x 5 to 8.5 x 14) Envelop (DL/C5/CM10/Mona) OHP, envelopes, labels, organizer 64 to 105 g/m2 (17 to 28 lb) 64 to 157 g/m2 (17 to 43 lb) Windows3.1x, 95/98 and NT4.0 Driver with Auto Installer Program Yes (Remote printer console for PCL4) 6,000 pages (A4, @5%) 3,000 pages (A4, @5%) Up to 20,000 pages Parallel & USB*2 Yes (Parallel) No Up to 12 Up to 99 Yes 50 to 200% in 1% increments 300 x 600 Available with Option Mono 1,200 x 1,200 (Int.), 300 x 600 (Opt.) 256 Yes TIFF/BMP/PCX/DCX/BTF/BTX/MAX/PDF TIFF/BMP/MAX/PDF Yes (ScanSoft TextBridge) No N/A N/A N/A N/A N/A N/A No Up to 12 Up to 99 Yes 50 to 200% in 1% increments 300 x 600 Available with Option Mono 1,200 x 1,200 (Int.), 300 x 600 (Opt.) 256 Yes TIFF/BMP/PCX/DCX/BTF/BTX/MAX/PDF TIFF/BMP/MAX/PDF Yes (ScanSoft TextBridge) No N/A N/A N/A N/A N/A N/A *2 USB for Windows98 only I - 10

Section	Page
FAX4750, FAX5750, FAX8350P, FAX8750P, MFC8300, MFC8600, MFC8700, MFC9650 Parts and Service Manual.pdf	1
CHAPTER I. GENERAL DESCRIPTION	6
1. EQUIPMENT OUTLINE	7
1.1 External Appearance and Weight	7
1.2 Components	7
2. SPECIFICATIONS	8
CHAPTER II. INSTALLATION	25
1. INSTALLING THE UPDATE DATA TO THE	26
CHAPTER III. THEORY OF OPERATION	29
1. OVERVIEW	30
2. MECHANISMS	31
2.1 Scanner Mechanism	32
2.1.1 Document feeding and ejecting mechanism	32
2.1.2 Scanner	32
2.2 Laser Printing Mechanism	33
2.2.1 Paper pick-up and registration mechanism	33
2.2.2 Print process mechanism	34
(1) Charging process	35
(2) Exposing process	35
(3) Developing process	36
(4) Transferring process	36
2.2.3 Heat-fixing mechanism	37
2.2.4 Paper ejecting mechanism	38
2.3 Sensors and Actuators	39
3. CONTROL ELECTRONICS	41
3.1 Configuration	41
3.2 Main PCB	42
3.3 Engine PCB	44
3.4 NCU PCB	45
3.5 Control Panel PCB	48
3.6 Power Supply PCB	49
[ 1 ] Low-voltage power supply PCB	49
[ 2 ] High-voltage power supply PCB	50
CHAPTER IV. DISASSEMBLY/REASSEMBLY AND	52
1. DISASSEMBLY/REASSEMBLY	54
Safety Precautions	54
Preparation	55
How to Access the Object Component	55
Disassembly Order Flow	56
1.1 Rear Cover	57
1.2 Access Plates R and F	57
1.3 Control Panel ASSY	58
1.4 Panel Rear Cover and Control Panel	59
1.5 Document Feed Roller ASSY, Document Ejection Roller ASSY, and Pinch Rollers	62
1.6 CIS Unit	63
1.7 Scanner Frame ASSY (Scanner Motor, Scanner Drive Unit, Document Take-in Roller,	64
1.8 Top Cover (Exit Roller, Speaker, and Document Guides)	68
1.9 Handset Mount and Hook Switch PCB (for models equipped with a handset)	74
1.10 Paper Sub Tray	76
1.11 VC Cover, VC Bracket, and VC Connector PCB (for models supporting video capture)	77
1.12 Front Cover	78
1.13 Outer Chute and Paper Pinch Rollers	79
1.14 Main Cover	80
1.15 Switch Cover	81
1.16 Laser Unit	82
1.17 Heat-fixing Unit and FU Lamp	83
1.18 Fan	87
1.19 Drive Gear ASSY and Main Motor ASSY	89
1.20 NCU Shield and NCU PCB	91
1.21 Bottom Plate, Main PCB, and Bottom Insulation Film	93
1.22 Low-voltage Power Supply PCB and Power Inlet	97
1.23 Inner Insulation Film, High-voltage Power Supply PCB, Engine PCB, and 2nd Cassette Relay	99
1.24 Toner Sensor (light-receiver) PCB and Toner Sensor (LED) PCB	101
1.25 Gears and Paper Pick-up Roller	102
1.26 Paper Feed Roller ASSY	103
1.27 Clutch Levers, Cassette Guide L, and Solenoid	104
1.28 Paper Cassette	105
1.29 Cleaning of High-voltage Contacts and Grounding Contacts	106
2. LUBRICATION	108
[ 1 ] Document feed roller ASSY and document ejection roller ASSY	108
[ 2 ] Control panel locks	109
[ 3 ] Scanner frame ASSY, document take-in roller and its shaft, and separation roller and	109
[ 4 ] Top cover	110
[ 5 ] Drive gear ASSY	111
[ 6 ] Paper cassette	112
CHAPTER V. MAINTENANCE MODE	114
1. ENTRY INTO THE MAINTENANCE MODE	115
2. LIST OF MAINTENANCE-MODE FUNCTIONS	116
3. DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS	118
3.1 EEPROM Parameter Initialization	118
3.2 Printout of Scanning Compensation Data	119
3.3 ADF Performance Test	121
3.4 Test Pattern 1	122
3.5 Firmware Switch Setting and Printout	123
3.6 Operational Check of LCD	169
3.7 Operational Check of Control Panel PCB	169
3.8 Receiver Volume Adjustment (applicable to the American version only)	171
3.9 Sensor Operational Check	172
3.10 CIS Scanner Area Setting	173
3.11 EEPROM Customizing	173
3.12 Erasure of Received FAX Messages Temporarily Stored in the Flash Memory (not applicable to	174
3.13 Equipment Error Code Indication	174
3.14 Output of Transmission Log to the Telephone Line	175
3.15 Cancellation of the Memory Security Mode (applicable to the European version only)	175
CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING	177
1. ERROR INDICATION	178
1.1 Equipment Errors	178
[ 1 ] Error messages on the LCD	178
[ 2 ] Error codes shown in the \	181
1.2 Communications Errors	183
2. TROUBLESHOOTING	193
2.1 Introduction	193
2.2 Precautions	193
2.3 Checking prior to Troubleshooting	193
2.4 Troubleshooting Procedures	195
[ 1 ] Control panel related	195
[ 2 ] Telephone related	195
[ 3 ] Communications related	196
[ 4 ] Paper/document feeding related	196
[ 5 ] Print-image related	197
Location of High-voltage Contacts and Grounding Contacts	204
Appendix 1. EEPROM Customizing Codes	206
Appendix 2. Circuit Diagrams	209
A. Main PCB (FAX4750/MFC8300/MFC8600/MFC8700/FAX8350P/MFC9650)	210
A. Main PCB (FAX5750/FAX8750P)	217
B. Modem PCB	224
C. Engine PCB	227
D. NCU PCB	229
E. Control Panel PCB	234
F. Power Supply PCB	236
pl_fax8350_8750_mfc9650.pdf	241
List1(MAIN FRAME)	244
List2(DOCUMENT SCANNER)	246
List3(LASER UNIT)	248
List4(PAPER TRANSPORT)	250
List5(PAPER TRAY)	252
List6(HEAT FIXING UNIT)	254
List7(COVER)	256
List8(CONTROL PANEL)	258
List9(PCB ASSY)	260
List10(ACCESSORIES)	262
List11(PRINTED MATERIAL)	264
List12(CARTON)	266
FAX4750pc.pdf	268
List1(MAIN FRAME)	271
List2(DOCUMENT SCANNER)	273
List3(LASER UNIT)	275
List4(PAPER TRANSPORT)	277
List5(PAPER CASSETTE)	279
List6(HEAT FIXING UNIT)	281
List7(COVER)	283
List8(CONTROL PANEL)	285
List9(PCB ASSY)	287
List10(ACCESSORIES)	289
List11(PRINTED MATERIAL)	291

Match case Limit results 1 per page

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(3/4)

Model

FAX4750

MFC8300

PRINTER

Available with option or

download from Web Site

Yes

Color/Mono

Mono

Engine Type

Laser (ZL)

Resolution (dpi)

600 x 600

Speed (ppm)

Paper Capacity (sheets)

250

Additional Paper Capacity (sheets)

250 (User option)

N/A

Output Paper Capacity (sheets)

150

Standard Print Language

Windows GDI (600 x 600)

Emulation

PCL4

Resident Fonts

24 bitmap (PCL4 Comp.)

Fonts Disk Based

Yes (35 True type)

Paper Handling Size

LTR, LGL, A4, B5, A5, EXE

Manual Feed Slot

Custom size (2.75 x 5 to 8.5 x 14)

Envelop (DL/C5/CM10/Mona)

Custom size (2.75 x 5 to 8.5 x 14)

Envelop (DL/C5/CM10/Mona)

Other Paper Type

OHP, envelopes, labels, organizer

Sheet Weight

(Paper Cassette)

64 to 105 g/m

(17 to 28 lb)

64 to 105 g/m

(17 to 28 lb)

(Manual Slot)

64 to 157 g/m

(17 to 43 lb)

64 to 157 g/m

(17 to 43 lb)

Printer Driver

Windows3.1x, 95/98 and NT4.0 Driver with

Auto Installer Program

Windows3.1x, 95/98 and NT4.0 Driver with

Auto Installer Program

Utility Software

Yes (Remote printer console for PCL4)

Toner Life

(High Yield : TN-430)

6,000 pages (A4, @5%)

(Standard Yield : TN-460)

3,000 pages (A4, @5%)

Drum Life

(DR400)

Up to 20,000 pages

Interface Type

Parallel

Parallel & USB*

Bundled Cable

Yes (Parallel)

COPY

Color

Speed (ppm)

Up to 12

Multi Copy (Stack)

Up to 99

Multi Copy (Sort)

Yes

Reduction/Enlargement

50 to 200% in 1% increments

Resolution (dpi)

300 x 600

SCANNER

Available with Option

Color/Mono

Mono

Resolution (dpi)

1,200 x 1,200 (Int.), 300 x 600 (Opt.)

Gray Scale

256

TWAIN Compliant

Yes

Formats (Import)

TIFF/BMP/PCX/DCX/BTF/BTX/MAX/PDF

Formats (Export)

TIFF/BMP/MAX/PDF

OCR

Yes (ScanSoft TextBridge)

MESSAGE CENTER/MESSAGE MANAGER

ICM Recording Time

N/A

Page Memory

N/A

OGM (MC/MC Pro/Paging)

N/A

TAD Type

N/A

Memo/Recording Conversation

N/A

Toll Saver

N/A

USB for Windows98 only